CN106838071A - Helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically - Google Patents
Helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically Download PDFInfo
- Publication number
- CN106838071A CN106838071A CN201610148655.2A CN201610148655A CN106838071A CN 106838071 A CN106838071 A CN 106838071A CN 201610148655 A CN201610148655 A CN 201610148655A CN 106838071 A CN106838071 A CN 106838071A
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- gear
- clutch shaft
- worm
- arm
- driven
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- 238000005452 bending Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Gear Transmission (AREA)
Abstract
The present invention relates to a kind of helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically, the adjustment arm includes the housing with arm handle, the worm screw being sleeved on clutch shaft main part D is arranged in housing, with worm gear of the worm engaging center with splined shaft hole, driven wheels, front shroud assembly and back shroud, the clutch shaft main part D includes clutch shaft, one end of worm screw is provided with shotpin on the clutch shaft, the other end is provided with one-way clutch, driven helical gear engagement on passive helical gear and driven wheels on the clutch shaft, its helical teeth is 35-45 degree using angular range, driven gear engagement on described driving gear and driven wheels, described arm handle uses staight shank structure or bending structure in the form of an " L ", connecting hole is carried thereon；Simple structure of the present invention, gearing friction power are small, high transmission accuracy.
Description
Technical field
The present invention relates to a kind of gap automatic regulating arm of automobile brake, specifically a kind of high accuracy bevel gear type arm for adjusting automobile brake clearance automatically.
Background technology
Arm for adjusting automobile brake clearance automatically is a kind of blank compensation apparatus suitable for wheeled car brake, and its effect is the brake clearance for adjusting automotive brake, gap is kept relative stability, so as to ensure the optimum braking force of brake.
The traditional vehicle brake gap of China takes regulation manually, it is impossible to the gap between the brake drum and shoe brake produced by brake pad wear is compensated automatically, so as to the generation of the phenomenons such as brake failure or sideslip can be caused.
At present, with China's expanding economy and the progress of science and technology, commercially occur in the arm for adjusting automobile brake clearance automatically of the existing many structure types of China.Arm for adjusting automobile brake clearance automatically is a critical piece in brake system of car, it is installed between brake chamber and camshaft, using the perception principle of transmission mechanism, at any time to shoe brake and brake drum because the brake clearance that abrasion increases voluntarily is adjusted in vehicle operation, it is allowed in the range of required standard, and the gap for keeping between each wheel, the gap overcome manually to adjust between brake drum and friction plate can not be timely, cause braking retardation, cause sideslip or failure, running brake is set to remain optimum efficiency, improve the security of vehicle traveling.
There is certain weak point in above-mentioned arm for adjusting automobile brake clearance automatically, be in particular in although solving the problems, such as that some are actual：1., due to there is friction between the worm shaft and hole inwall that are arranged in shell inner hole, so the precision of its force of sliding friction influence adjustment arm transmission；2., the driven gear in clutch assembly uses through ship structure, there is a component during work between driven gear and active oblique gear, causes the gear shaft in clutch assembly that vibration occurs, and adjustment arm adjustment is dumb.3., the complex structure of product, volume are big, exchange poor universality, install and use is not convenient and reliable enough.
The content of the invention
The invention aims to provide, a kind of simple structure, gearing friction power is small, high transmission accuracy helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically.
The object of the present invention is achieved like this, the adjustment arm includes the housing with arm handle, is arranged in housing the worm gear of worm screw and worm engaging center with splined shaft hole, driven wheels, front shroud assembly and the back shroud being sleeved on clutch shaft main part D, it is characterised in that：The clutch shaft main part D includes clutch shaft, one end of worm screw is provided with shotpin, the other end and is provided with one-way clutch on the clutch shaft, driven helical gear engagement on passive helical gear and driven wheels on the clutch shaft, its helical teeth are 35-45 degree using angular range, driven gear engagement on described driving gear and driven wheels, described arm handle is using staight shank structure or bending structure in the form of an " L ", thereon with connecting hole.
Side between the center line B and adjustment arm center line B' of the arm handle is 0-100mm apart from H；The clutch shaft uses the flat structure of interference fit with worm screw, and the one-way clutch uses torsion spring formula structure.
The present invention using said structure due to having advantages below：
1st, it is of the invention because clutch shaft directly drives worm screw, reduce by a gear drive when work is adjusted, assembly is worked more smooth, in hgher efficiency；Clutch shaft one end is provided with shotpin, and clutch shaft coordinates at worm screw using side flat interference fit, prevents clutch shaft and worm screw relative displacement and rotation.
2nd, due to the driven gear on clutch axle assembly is used into helical teeth structure, driven gear is offseted the present invention with the A Jin component of driven helical gear during work.Driven wheels will not occur vibration, adjustment arm adjustment more odd jobs.
3rd, driving gear of the present invention and driven gear can carry out gear ratio change to the clearance requirement of shoe plate according to user, and the driving gear number of teeth is between 58-62 teeth, adjustment post gap scope 0.4-1.2mm.
4th, present invention ensure that the constant brake clearance of four-wheel, because automatic clearance adjuster can be in vehicle operation, to the continuous adjust automatically in gap of brake shoe plate abrasion increase, so, no matter vehicle travels how many kilometer, brake clearance can all remain constant, until next time changes shoe plate, so as to prevent the generation of braking retardation, sideslip and brake failure phenomenon.
5th, present invention ensure that optimal braking moment, because shoe plate gap has obtained timely adjusting, so in the case of shoe plate serious wear, can similarly make adjustment arm movement angle close proximity to right angle, it is ensured that brake chamber thrust will not decline.
6th, the consumption of compressed air is reduced.Because the clearance constant of shoe plate, brake chamber can work in minimum stroke, therefore, the consumption of compressed air and chamber inflated time when can reduce braking every time, and the maximum pressure required for braking is reached within the shortest time, braking response time and braking distance are shortened, while the also service life of extension air pump and air chamber diaphragm.
7th, the present invention reduce material consumption, extend brake part service life, using invention product after, can keep stablizing optimal braking effect.Therefore, reducing the access times of brake component and time, the temperature of automatic drum is reduced, mitigates abrasion and heat fading, prevent brake drum from occurring oval, so as to extend the service life of brake component, the consumption of material is reduced, while eliminating the work that maintainer frequently adjusts brake clearance, vehicle admission repair time and maintenance cost is reduced, improve vehicle and use serviceability rate, reduce cost of transportation.
8th, product structure of the present invention is simple, small volume, exchange that versatility is good, easy to use and reliable to install, generally applicable various vehicles.
Brief description of the drawings
Fig. 1 is high accuracy helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically overall structure diagram.
Fig. 2 is A-A faces of the present invention sectional view.
Fig. 3 is driven wheels structural representation of the present invention.
Fig. 4 is clutch shaft construction schematic diagram of the present invention.
Reference：Housing 1, clutch shaft main part D, worm screw 2, worm gear 3, driven wheels 4, front shroud assembly 5, back shroud 6, the shotpin 8 of clutch shaft 7, driven gear 9, driven helical gear 10, passive helical gear 11, one-way clutch 12, driving gear 13, arm handle 14, connecting hole 15, flat structure 16.
Specific embodiment
As shown in accompanying drawing 1,2 and 3：The adjustment arm engages worm gear 3 of the center with splined shaft hole, driven wheels 4, front shroud assembly 5 and back shroud 6 with worm screw 2 including carrying the housing 1 of arm handle 14, being arranged on the worm screw 2 being sleeved on clutch shaft main part D in housing 1, the clutch shaft main part D includes clutch shaft 7, one end of worm screw 2 is provided with the shotpin 8, other end and is provided with one-way clutch 12 on the clutch shaft 7, clutch shaft 7, using the flat structure 16 of interference fit, prevents clutch shaft 7 and the relative displacement of worm screw 2 and rotation with worm screw 2；The one-way clutch 12 uses torsion spring formula structure, realizes Follow-up type and is adjusted without unit, more accurately controls gap, and described clutch shaft 7 directly drives worm screw 2, reduces by a gear drive when work is adjusted, and assembly is worked more smooth, in hgher efficiency；The driven helical gear 10 on passive helical gear 11 and driven wheels 4 on clutch shaft 7 is engaged, its helical teeth is 35-45 degree using angular range, it is adaptable to various brake chamber power demands；Driven gear 9 on described driving gear 13 and driven wheels 4 is engaged, can carry out gear ratio change to the clearance requirement of shoe plate according to user；Described arm handle 14 is using staight shank structure or bending structure in the form of an " L ", thereon with connecting hole 15.
Side between the center line B and adjustment arm center line B' of the arm handle 14 is 0-100mm apart from H.
When using, by camshaft of the worm gear of the invention 3 loaded on automotive brake, the air-leg connecting hole 15 of the arm handle 14 of housing 1 connects automobile brake chamber push rod.When automobile brake chamber push rod swings, housing 1 swings, the driving gear 13 in front shroud assembly 5 is driven to swing, the driven gear 9 in driven wheels 4 being meshed therewith swings simultaneously, and driven helical gear 10 drives passive helical gear 11 to swing in driven wheels 4, and passive helical gear 11 drives clutch shaft 7 to swing by one-way clutch 12, worm screw 2 swings therewith, worm screw 2 drives worm gear 3 to swing, so that band electrical automobile automation camshaft swings, completes gap adjustment work.
Claims (3)
1. a kind of helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically, the adjustment arm includes carrying arm handle（14）Housing（1）, be arranged on housing（1）Inside it is sleeved on the worm screw on clutch shaft main part D（2）With worm screw（2）Worm gear of the engagement center with splined shaft hole（3）, driven wheels（4）, front shroud assembly（5）And back shroud（6）, it is characterised in that：The clutch shaft main part D includes clutch shaft（7）, the clutch shaft（7）Upper worm screw（2）One end be provided with shotpin（8）, the other end be provided with one-way clutch（12）, the clutch shaft（7）On passive helical gear（11）And driven wheels（4）On driven helical gear（10）Engagement, its helical teeth are 35-45 degree, described driving gear using angular range（13）And driven wheels（4）On driven gear（9）Engagement, described arm handle（14）Using staight shank structure or bending structure in the form of an " L ", connecting hole is carried thereon（15）.
2. a kind of helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically according to claim 1, it is characterised in that：The arm handle（14）Center line B and adjustment arm center line B' between side be 0-100mm apart from H.
3. a kind of helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically according to claim 1, it is characterised in that：The clutch shaft（7）With worm screw（2）Using the flat structure of interference fit（16）, the one-way clutch 12 is using torsion spring formula structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610148655.2A CN106838071A (en) | 2016-03-16 | 2016-03-16 | Helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610148655.2A CN106838071A (en) | 2016-03-16 | 2016-03-16 | Helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106838071A true CN106838071A (en) | 2017-06-13 |
Family
ID=59152087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610148655.2A Pending CN106838071A (en) | 2016-03-16 | 2016-03-16 | Helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106838071A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467613A (en) * | 2020-11-19 | 2021-03-09 | 国网四川省电力公司检修公司 | Large-tonnage insulator mechanical labor-saving lead screw |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2478888Y (en) * | 2001-02-06 | 2002-02-27 | 韩学智 | Vehicle brake gap automatic adjusting arm |
| CN2630563Y (en) * | 2003-07-05 | 2004-08-04 | 任永山 | Automobile brake gap automatic adjusting arm |
| CN201772001U (en) * | 2010-07-14 | 2011-03-23 | 倪士全 | Gear type automatic automobile brake-clearance adjusting arm |
| CN102449341A (en) * | 2008-11-18 | 2012-05-09 | 本迪克斯斯派塞基础制动有限责任公司 | Automatic slack adjuster with clutch release cam |
| CN202349052U (en) * | 2011-12-15 | 2012-07-25 | 倪世荣 | High-accuracy helical gear type automatic adjusting arm for clearance of automobile brake |
| CN202746467U (en) * | 2012-09-13 | 2013-02-20 | 瑞立集团瑞安汽车零部件有限公司 | Automatic automobile brake gap adjusting arm, brake device and automobile |
| CN103782055A (en) * | 2011-10-14 | 2014-05-07 | 哈尔德克斯制动产品股份公司 | Brake lever for drum brake |
| CN204239569U (en) * | 2014-11-13 | 2015-04-01 | 绍兴驰达汽车配件制造有限公司 | Interior only adjustment arm angular adjustment and locking device |
| CN204533306U (en) * | 2015-01-26 | 2015-08-05 | 湖北中翰制动系统有限公司 | A kind of helical gear automatic adjusting arm |
| CN205423631U (en) * | 2016-03-16 | 2016-08-03 | 倪世荣 | Clearance automatic adjustment arm is applied brake from mode automobile to helical gear worm |
-
2016
- 2016-03-16 CN CN201610148655.2A patent/CN106838071A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2478888Y (en) * | 2001-02-06 | 2002-02-27 | 韩学智 | Vehicle brake gap automatic adjusting arm |
| CN2630563Y (en) * | 2003-07-05 | 2004-08-04 | 任永山 | Automobile brake gap automatic adjusting arm |
| CN102449341A (en) * | 2008-11-18 | 2012-05-09 | 本迪克斯斯派塞基础制动有限责任公司 | Automatic slack adjuster with clutch release cam |
| CN201772001U (en) * | 2010-07-14 | 2011-03-23 | 倪士全 | Gear type automatic automobile brake-clearance adjusting arm |
| CN103782055A (en) * | 2011-10-14 | 2014-05-07 | 哈尔德克斯制动产品股份公司 | Brake lever for drum brake |
| CN202349052U (en) * | 2011-12-15 | 2012-07-25 | 倪世荣 | High-accuracy helical gear type automatic adjusting arm for clearance of automobile brake |
| CN202746467U (en) * | 2012-09-13 | 2013-02-20 | 瑞立集团瑞安汽车零部件有限公司 | Automatic automobile brake gap adjusting arm, brake device and automobile |
| CN204239569U (en) * | 2014-11-13 | 2015-04-01 | 绍兴驰达汽车配件制造有限公司 | Interior only adjustment arm angular adjustment and locking device |
| CN204533306U (en) * | 2015-01-26 | 2015-08-05 | 湖北中翰制动系统有限公司 | A kind of helical gear automatic adjusting arm |
| CN205423631U (en) * | 2016-03-16 | 2016-08-03 | 倪世荣 | Clearance automatic adjustment arm is applied brake from mode automobile to helical gear worm |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467613A (en) * | 2020-11-19 | 2021-03-09 | 国网四川省电力公司检修公司 | Large-tonnage insulator mechanical labor-saving lead screw |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170613 |